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W. S. STORM'S. FURNACE FOR STEAM BOILERS.

No. 63,670.- PatentedApr. 9, 1867.

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FURNACE FOR. STEAM BOILERS.

so WHOM IT MAY oononnn;

Be it known that I, WILLIAM STEMBELL S'romus, of lt'iiddletowu, in the county of Butler, and State of Ohio, have invented certain new and useful improvements in Smoke-Consuming Furnaces; and Ihcrcby declare the following to be a full, clear and exact description of the sonic, reference being had to the accompanying drawings, in whicht Figure 1 is a transverse section of a furnace constructed in accordance withmy invention, used in connec Lion with an ordinary steam boiler.

Figure 2 is a horizontal section of the sanie;' and Figure 3 is a longitudinal vertical section. I

The primary object I have in view in my invention is to consume the smoke and other products of combustion evolved by the burning fuel in a furnace, and-to employ the heat and ilame generated by the combustion of these products, so as to intensify to a high degree the heat to which the boiler or other object to be heated is the gamut want to in tlgrsc iittttts Qntntt in matting put at tlgt 521ml.

exposed.

When 'the ordinary method of burning fuel is employed, there result a great loss and waste of fuel. The smoke and other products of combustion evolved from the fuel, instead of being used as just indicated, are

ordinarily conducted oit" and discharged from the fire-cha1nber as fast as they are generated. These products of combustion consist, however, for the most part of gases (hydrocarbon) of a highly combustible nature, which nrenot consumed in the fire-chamber only for the reason that the supply of oxygen to the furnace is notsnf ficient to effect the complete combustion of the fuel. The gases are, in fact, fuel in n light and highly divided state, already heated and prepared for immediate and complete combustion, which takes pu'ceassmmts they are brought in contact and intermingledwith the requisite supply of oxygen. An intensely heated flamevis thus produced, 7 which canbe directed upon the object to be heated so as to increase by many degrees the heat evolved from the fuel. It becomes, therefore, a great desideratum to devise means by which this supply of gaseous fuel may be saved and utilized, and, as above said, the primary object of my improvements is to client this result. To this end my invention principally consists in the method of first collecting the products oft combustion in a chamber apart from the lire-box of the furnace, thoncffecting their combustion by intermingling them with heated atmospheric air, and then directing theheat and flame thus evolved back into the fire-chamber, causing them to impinge at thesamc time against the surface of the object to be heated. and to intensify the heat already evolved from i the fuel.

In order to effect a thorough and rapid mingling of the'oxygeu with the products or combustion, I arrange the fire-ehamberfiues, one on each side of the atmospheric air flue, so that the air when issuing from its fine may itermediatcly unite with the-guscs which are being discharged from the fines leading from the fire-chamber. The chamber or chambers in which the products of combustion are thus ignited may be formed in any suitable manner, the only requisite being that it should have flues which communicate as above described with the firebox and with the outside air, and that it should also be provided with ahotherpa ssage or opening through which g the products of combustion, when oxygenated and inflamed, may return to the fircchamber. In the drawings, in which my invention is illustrated as applied to an ordinary steam boiler, thesc arc chambers, A,-formed above and on each side of the fire-chamber F, by means of the upper arch B and the lower arch or fire-bridge C, which directs the heat of the fuel upon the boiler. The spaces enclosed between the two arches and the sides of the boiler constitute these chambers. Each one of them communicates with the fire-chamber by means of 9/ lines, a, which are formed in the tire-walls and bridge C, on each side of the atmospheric air fiucs 5. These latter extend to the outside of the furnace, and, of course, communicate with the surrounding air. The boiler itself at each. end rests upon the solid masonry of which the front and back walls of the furnace or fire-chamber are formed. The upper are-h 13, which nearlycovers the upper part of the boilcij is closely in contact therewith. The lowcr urch or fire-bridge C, on the contrary, does not come in contact with the boiler, but there is left a space, a, between the two, for the purposes hereinafter mentioned. The auxiliary chambers on eachsidc of the tire-box are thus hermetically tight on top, their only means of communication with the outside air being through the air lines I). In the back wall of the fire-chamber, just underneath the boiler, a flue, (Z, is formed, through which the cinders and residuum of incouibustiblo gases, if there be any, pass. The cindersdrc p thzo ugh the opening E, formed in the bottom of the furnace, :and the gases are caruiedofi through the chimney.

The operation of the furnace is as follows: The fuel, either coal or wood, is supplied to tho fire-chamber.

through the fire-door of the furnace. As soon as it begins to burn it evolves smoke and other gaseous products of combustion in a highly heated state; these gases rise, and, leaving the chamber, ascend through the fines a, formedin the fire-walls and bridge G, into the chambers A on each side oithe boilers; Innn'ediately upon being discharged from thefiues they become oizygenated by Contact with the air, which during its passage through 'its fines, b, has become also greatly heated, and the union of the two produces an intense heat and flame, which being driven forward strikes the curved top of the chamber, by which tbeyare deflected so as to be brought against the surfiice of the boiler. They thus. impinge against a considerable portion of the boiler, along'the surface of which they pass through the space 0 left between it and thelewer arch or fire-bridge C, until they again return to the fire-chamber F, where they mingle with and intensify the heat already there. The residuum of gases and the cinders thence pass out through the flue t; in the back wall of the fire-chamber into the space beyond, where the einders drop to the ground,'and the unconsurncd gaseous produetsof combustion (ii there be any) are carried 05 through the chimney.

It will be perceived that the method I have just-indicated,-while it enables us to effect the complete cor.- sumption or combustion of all the gases evolved by the burning fuel, possesses also other important advantages. The boiler does not bear upon or come at all in contact with the fire-bridge C, but is held and supported entirely by the masonry which forms the frontancl back of the fire-box. The arch is by this means unsubjeetcd to any strain or pressure which might injurionsly afi'ect it, and'there is but little liability of its getting out of repair. The arrangement of the air and fire-chamber flues is such, also, that the air is projected into the midstoi the gases, which are thus thoroughly and in'iinediately intermingled with the oxygen.

I It will of course be understood that my. improvements, subject to modifications which will readily suggest themselves, can be employed inmany'connections, and applied to all species of boilers, or used ror heating purposes in general.

Having described my invention, what I claim, and desire to secure by Letters Patent, i. 1. The combination, with the fire-chamber of a furnace or other heater, of an auxiliary chamber communicating with the fire-chamber and outside air through fines and passages arranged substantially as shown and describedf 2. The combination of the lire-chamber and boiler with the upper arch and lower arch or fire-bridge of the furnace, under the-arrangement outlier-operation as shown-and described.

In testimony whereof I havesigned my name to this speeification before two subscribing witnesses.

I WILLTAM S. STORMS.

Witnesses:

A} PQLLOK, Eon. F. B:-t0WN. 

